<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>非父子组件间传值(Bus/总线/发布订阅模式/观察者模式)</title>
    <script src="./vue.js"></script>
</head>
<body>

    <div id="root">
        <child content="Dell"></child>
        <child content="Lee"></child>
    </div>

    <script>
        //向vue实例的类添加一个bus属性
        Vue.prototype.bus = new Vue()
        
        Vue.component('child', {
            data: function () {
                return {
                    selfContent: this.content
                }
            },
            props: {
                content: String
            },
            template: '<div @click="handleClick">{{selfContent}}</div>',
            methods: {
                handleClick: function () {
                    this.bus.$emit('change', this.selfContent)
                }
            },
            mounted: function () {
                var this_ = this
                this.bus.$on('change', function (msg) {
                    this_.selfContent = msg
                })
            }
        })

        var vm =new Vue({
            el: "#root"
        })
    </script>
</body>
</html>